Update from https://crrev.com/304121

net/quic/quic_time.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // QuicTime represents one point in time, stored in microsecond resolution.
 // QuicTime is monotonically increasing, even across system clock adjustments.
 // The epoch (time 0) of QuicTime is unspecified.
 //
 // This implementation wraps the classes base::TimeTicks and base::TimeDelta.
 
 #ifndef NET_QUIC_QUIC_TIME_H_
 #define NET_QUIC_QUIC_TIME_H_
 
 #include "base/basictypes.h"
 #include "base/time/time.h"
 #include "net/base/net_export.h"
 
 namespace net {
 
 static const uint64 kNumMicrosPerSecond = base::Time::kMicrosecondsPerSecond;
+static const uint64 kNumMicrosPerMilli =
+    base::Time::kMicrosecondsPerMillisecond;
 
 // A QuicTime is a purely relative time. QuicTime values from different clocks
 // cannot be compared to each other. If you need an absolute time, see
 // QuicWallTime, below.
 class NET_EXPORT_PRIVATE QuicTime {
  public:
   // A QuicTime::Delta represents the signed difference between two points in
   // time, stored in microsecond resolution.
   class NET_EXPORT_PRIVATE Delta {
    public:
@@ skipping 156 matching lines @@
 inline bool operator<=(QuicTime lhs, QuicTime rhs) {
   return !(rhs < lhs);
 }
 inline bool operator>=(QuicTime lhs, QuicTime rhs) {
   return !(lhs < rhs);
 }
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_TIME_H_